Fig. 6

A 66-year-old male experienced severe flank pain with acute blood loss shortly after ureteroscopic stone removal. Unenhanced (A), arterial (B) and venous (C) phase MDCT images showed large subcapsular renal haematoma (*) with extensive retroperitoneal bleeding including the posterior pararenal space (arrowheads), causing severe parenchymal compression. Contrast medium and urine extravasation were excluded, thus allowing conservative treatment. A month later follow-up unenhanced MDCT (D) with the ureteral stent still in place showed well-demarcated residual haematoma with decreased size and attenuation values (*)